Tokens for ExportTileCacheTask

[RobertJohnson5]

I'm trying to create an app with offline capabilities, but I've run into an issue trying to set a basemap. Basically, I can't figure out how to pass a token into the ExportTileCacheTask to allow user to download a tpk from one of Esri's tiled map services for use when they're offline. Has anyone done this before?

[RobertJohnson5]

Do you have any advice for setting this sample up to work with a proxy? When I try to set the proxy using  ArcGISRuntime.setupProxy it just breaks the map and doesn't seem to return any useful error messages.